296 N.W. 728 MRS. FRED BAHNER, Appellant, v. CITY OF Des MOINES, Appellee. No. 45517.Supreme Court of Iowa. March 11, 1941. Rehearing Denied June 20, 1941. MUNICIPAL CORPORATIONS: Snow and ice accumulation on streets 1, 3 — practicable method of prevention or removal as prerequisite to negligence liability — chuck hole causing injury to occupant […]